5) 逻辑运算符(Logical operators [ˈlɑ:dʒɪkl]) 6) 字符串运算符(String operators) 7) 条件(三元)运算符(Conditional operator [kənˈdɪʃənəl) 8) 逗号运算符(Comma operator [ˈkɑ:mə]) 9) 一元运算符(Unary operators [ˈju:nəri]) 10) 关系运算符(Relational...
2.赋值运算符(Assignment operators) 3. 逻辑运算符 (Logical operators) 4.比较运算符(Comparison operators) 5.位运算符(Bitwise operators) 6.字符串运算符(String operators) 7. 逗号运算符 (Comma operator) 8.关系运算符(Relational operator) 9.一元运算符(Unary operators) 10. 条件(三元)运算符 (Condi...
按照我对此运算符(operator)的早期理解,如果操作数(operand)“expr1”和“expr2”同时为真时,那么上面的代码片段将会执行任何位于if语句块中的内容。这是绝对正确的,并且恰好也是如此工作。唯一的蹊跷是,究竟幕后实际发生了什么。根据Mozilla的JavaScript文档对逻辑运算符(logical operators)的说明。 (逻辑与)若expr1可...
The logical AND operator && returns true if both the expressions are true. For example,let x = 2; // both expressions are true console.log((x < 4) && (4 >= x)); // true // only one expression is true console.log((x <= 4) && (2 == 4)); // false // both expressions...
JavaScript logical AND operator example h1 { color:red; border-bottom: 3px groove silver; padding-bottom: 8px; } JavaScript equal operator (==) example
If you add a number and a string, the result will be a string! JavaScript Logical Operators OperatorDescription &&logical and ||logical or !logical not Note Logical operators are fully described in theJS Comparisonschapter. JavaScript Type Operators ...
Logical operators are typically used with Boolean (logical) values. When they are, they return a Boolean value. However, the && and || operators actually return the value of one of the specified operands, so if these operators are used with non-Boolean v
Commonly Used Logical Operators OperatorSyntaxDescription && (Logical AND) expression1 && expression2 true only if both expression1 and expression2 are true || (Logical OR) expression1 || expression2 true if either expression1 or expression2 is true ! (Logical NOT) !expression false if expressio...
// Logical AND operationtrue&&true;// truetrue&&false;// falsefalse&&true;// falsefalse&&false;// false// Logical OR operationtrue||true;// truetrue||false;// truefalse||true;// truefalse||false;// false If applied to boolean values, the&&operator only returnstruewhen both of its op...
Comparison and Logical operators are used to test for true or false.Comparison OperatorsComparison operators are used in logical statements to determine equality or difference between variables or values. Given that x = 5, the table below explains the comparison operators:OperatorDescriptionComparing...